title: Bromoperoxidase activity and vanadium level of the brown alga Ascophyllum nodosum.
abstract: Vanadium-dependent peroxidase activity in extracts of Ascophyllum nodosum growing in the intertidal region close to Roscoff/France, and algal vanadium levels, followed approximately similar seasonal variation, as deduced from a study lasting from April 2005 to March 2006. High peroxidase (PO) activity was found in extracts obtained from algae collected in between midwinter to spring [approximately 100-190 U per g dry mass (dm), triiodide assay] with a maximum in April. Periods of reduced PO activity lasted from summer to early winter (approximately 50-90 U per g dm). High vanadium levels (1.5-2.2 mg kg(-1)dm) were found in algae collected from midwinter to spring, whereas reduced levels (0.6-1.4 mg kg(-1)dm) were found in summer to early winter.
authors.affiliation: Fachbereich Chemie, Organische Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse, D-67663 Kaiserslautern, Germany. hartung@chemie.uni-kl.de
authors.forename: Jens
authors.initials: J
authors.lastname: Hartung
authors.forename: Oliver
authors.initials: O
authors.lastname: Brücher
authors.forename: Diana
authors.initials: D
authors.lastname: Hach
authors.forename: Heiko
authors.initials: H
authors.lastname: Schulz
authors.forename: Hans
authors.initials: H
authors.lastname: Vilter
authors.forename: Gunter
authors.initials: G
authors.lastname: Ruick
mesh_terms: D020418:Algal Proteins / Q000378:metabolism*; D044646:Ascophyllum / Q000201:enzymology*; D010544:Peroxidases / Q000378:metabolism*; D012621:Seasons; D014639:Vanadium / Q000378:metabolism*
chemical_list: D020418:Algal Proteins; D014639:Vanadium; D010544:Peroxidases; C026195:bromide peroxidase